Dissociation, rapid heartbeat
If you have depression you will usually have anxiety attacks. You can treat both at the same time.
Anxiety is usually a sick feeling. You feel sick to your stomach and don't want to do things that make you feel this way. Cold sweats, confusion are classic examples.
You need to be tested for this. Go to mental health in the yellow pages and talk with someone about this. The state run clinics are cheap if you are not able to work. It takes some time to get in to them but can save you lots of money.
very heavy breathing, shakes, sweat, feelings of fainting, blacking out or dying
It starts as a feeling that I want to cough and won't be able to stop and if I fail to stop it going further I end up with my throat closing so I can not breath and then I have to fight the feeling and after what feels like hours but is probably seconds air starts going in or out again its very scary. IF I catch it before that it just feels like a tight chest and deep breathing helps it.
My breathing quickens, my heart beats fast, and I have to run.
Anxiety due to overwhelming peace.
Or boredom. Or anxiety. it's definitely due to something and anxiety is clearly the end result.
Shaking and shortness of breath
Shortness/loss of breathe,the world starts twisting and I feel REALLY small